5310-01-255-4621

Find complete technical information, availability, and procurement data for: 5310-01-255-4621
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-255-4621

Item Name Code

29729

Assigment Date

05/21/1987 (39 years ago)

A washer of nonresilient material usually having two parallel bearing surfaces. The outside and/or inside edges have one or more protuberances. The ends and/or edges may be prebent at any angle or the protuberances may be prebent at any angle to the bearing surfaces. The keys or lugs may be fitted into keyways in adjacent material or they may be bent over after application to hold or lock one or more items in place. Excludes:thrust type washer.

1.252 inches maximum washer outside diameter, prevailing torque all metal design locking feature, soluble lubricant lubrication, right-hand thread direction, 3b thread class

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 3b
Thread Direction: right-hand
Locking Feature: prevailing torque all metal design
Washer Outside Diameter: 1.252 inches maximum
Lubrication: soluble lubricant
Overall Height: 0.974 inches maximum
Nut Style: double hexagon
Washer Thickness: 0.172 inches minimum
Width Across Flats: 0.928 inches minimum and 0.940 inches maximum
Thread Series: unjf
Thread Quantity Per Inch: 16
Hardness Rating: 45.0 rockwell c maximum
Nominal Thread Size: 0.750 inches
Material: iron alloy 660 overall
Material Document And Classification: ams 5732 assn std single material response overall
Precious Material And Location: all surfaces silver
Precious Material: silver
Surface Treatment: silver overall
Surface Treatment Document And Classification: ams 2410 assn std single treatment response overall

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
119FW1216	Extended Washer Self-Locking Nut

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5310-01-255-4621?

The FSCG of the NSN 5310-01-255-4621 is 5310

Does the NSN 5310-01-255-4621 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-255-4621 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5310-01-255-4621 contain precious materials?

Item contains silver.

Does NSN 5310-01-255-4621 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5310-01-255-4621 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Thu, May 21, 1987